# from datetime import datetime
# from typing import List, Optional
# from .data_source import DataSource
# from ..database import DatabaseManager
# import aiohttp
# import json

# class PoliticalEvent:
#     def __init__(self, 
#                  event_date: datetime,
#                  country: str,
#                  policy_type: str,
#                  impact_score: float,
#                  raw_content: str):
#         self.event_date = event_date
#         self.country = country  
#         self.policy_type = policy_type
#         self.impact_score = impact_score
#         self.raw_content = raw_content
#         self.processed = False

# class PoliticalDataSource(BaseDataSource):
#     """中美贸易政策数据源"""
    
#     def __init__(self):
#         super().__init__(source_type="political")
#         self.api_endpoint = "https://api.political-events.com/v1"
#         self.session = aiohttp.ClientSession()
        
#     async def fetch_real_time(self) -> List[PoliticalEvent]:
#         """获取实时政治事件数据"""
#         try:
#             async with self.session.get(
#                 f"{self.api_endpoint}/trade_policies",
#                 params={"countries": "US,CN"},
#                 timeout=10
#             ) as response:
#                 data = await response.json()
#                 return [
#                     PoliticalEvent(
#                         event_date=datetime.fromisoformat(item["date"]),
#                         country=item["country"],
#                         policy_type=item["policy_type"],
#                         impact_score=float(item["impact_score"]),
#                         raw_content=json.dumps(item)
#                     ) for item in data["events"]
#                 ]
#         except Exception as e:
#             self.log_error(f"Failed to fetch political data: {str(e)}")
#             return []
            
#     async def close(self):
#         await self.session.close()
